He said he was concerned about the road works about to begin on the Westlink.
It comes as part of Blackpool Promenade closes for 10 days for road works.
Motorists continue to face delays as a busy motorway stretch near Southampton remains closed for major road works.
BBC: M27 closure: Motorway closure continues through weekend
The Gwynedd Archaeological Trust says road works and a honeycomb of buildings were found, but no defensive ditches.
The Highways Agency has suspended road works during Easter on a number of England's motorways and major A roads.
Throughout the road works, there will be some daytime lane restrictions in place.
City traders blame road works, high rent, parking and drugs for problems in Wales' second city and councillors want action.
BBC: Swansea council chief rejects 'unfair' claims over city
Politicians tend to favor old school road works, fixing potholes and building new roads instead of investing in unseen technology.
The disruption was caused by a delay in reopening a lane on the A9 which had been closed for road works.
Road works at Inverness have caused major disruption for travellers headed for the city from the other side of the Kessock Bridge.
The road works are connected to a wider project to carry out repairs to the Kessock Bridge, which will start in February.
Speaking ahead of the second phase of the road works, Mr Kennedy has admitted further short-term disruption is likely in the short-term.
Highland Council also hopes a closed down railway station at Conon Bridge can be revamped and reopened before the road works start.
Major travel disruption is expected during road works on the Kessock Bridge.
Football fans are among road users in the Highlands being encouraged to car share during major road works on the Kessock Bridge at Inverness.
"Road works are a major cause of congestion on our roads and irritation for motorists, and anything that reduces their impact is welcome, " he said.
Ashley Johnson, assistant secretary of Bean Residents' Association, said the group would have liked to have seen a link between the opening of the extension and road works.
Under the plans, any revenue raised from the lane rental charges would be used by councils to fund measures which could help to reduce future road works disruption.
Preparation work for the new route from the A3095 is expected to start on 18 February with the main road works beginning in the spring for 26 weeks.
BBC: Broadmoor Hospital to get new access road ahead of revamp
Mr Holley also defended road works in the city centre, in particular the Oystermouth Road corridor, which is the main gateway into Swansea and often suffers from traffic jams.
BBC: Swansea council chief rejects 'unfair' claims over city
He said road works in one of the city centre's main routes, St Mary Street, was also affecting the number of ranks available, and there was already a shortage.
The DRD minister introduced a package of measures to encourage people back into the city centre and even ordered an embargo on road works on main routes across the city from 26 November until after Christmas.
There is no road, the works have all gone, there is an open-cast mine, and there is a free mountain to boot.
Their expertise, the council thinks, may enable it to deliver a road and rail system, partly financed by road tolls, which works.
Medieval remains discovered under a road in Reading during repair works have been analysed by experts.
The widening of several access ramps from the passing ring road also is in the works.
Sue Stevenson, who works down the road at a petrol station, feels differently.
Long's recent works include the Road River, on Box Hill, in Surrey, on the route of the 2012 Olympic cycle road races.
BBC: Bristol artist Richard Long among Queen's New Year Honours
If councils were allowed to tax such developments and keep the proceeds (as they are in other developed countries), then a bargain could be struck, with local people offered better services in return for hosting a noisy new road or an unsightly sewage works.
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